According to the article by Kiplinger, one of the benefits of using a savings account or a money market deposit account to save for emergency fund is:

		These accounts double your balance in a month
		The funds in these accounts are available whenever you need them and their value is not reduced
		The interest rate for savings and money market deposit accounts is among one of the highest interest rates available
		The funds in these accounts are not available until 6 months, forcing you to not use your emergency funds